In Latin, the Congregatio de Causis Sanctorum. The Congregation is responsible dealing with all matters that lead to the canonization of the Servants of God. It was created on 22 January1588 by PopeSixtus V as the Congregation of Rites. On 29 June1908, the Congregation of the Discipline of the Sacraments was erected, leaving the Congregation of Rites to deal with canonization causes. In 1969 the Congregation was re-named Congregation for the Causes of Saints.

The role of the Congregation is to investigate potential cases for canonization, to consider proposals, and decide whether the case may be referred to the Pope. The Congregation also decides whether or not the status of Doctor of the Church will be attributed to a saint. A team is formed to study each case proposed for sainthood, a process that takes years, and the Congregation has its own physicians to analyze reported miraculoushealings. While not secretive, the Congregation is often slow and reluctant to release news on a particular Cause in order not to spread rumours or cause sensationalism.